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Implicit memory

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https://www.readbyqxmd.com/read/27920752/the-effect-of-emotion-and-reward-contingencies-on-relational-memory-in-major-depression-an-eye-movement-study-with-follow-up
#1
Viola L Nemeth, Gergo Csete, Gergely Drotos, Nora Greminger, Zoltan Janka, Laszlo Vecsei, Anita Must
Background: Episodic memory disturbances were found to constitute a potential trait marker for major depression (MD). The recall of positive or rewarding information in a relational context is specifically impaired. Eye-movement recording constitutes a novel, direct approach to examine implicit memory performance. Here we aimed to assess the effect of emotional context and implicit virtual monetary reward or loss on viewing patterns in association with relational memory in a 6-months follow-up study in MD. Materials and Methods: Twenty-eight patients with MD and 30 healthy participants were trained to associate a face (happy/sad/neutral) with a background scene...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27909401/implicit-learning-in-transient-global-amnesia-and-the-role-of-stress
#2
Frauke Nees, Martin Griebe, Anne Ebert, Michaela Ruttorf, Benjamin Gerber, Oliver T Wolf, Lothar R Schad, Achim Gass, Kristina Szabo
Transient global amnesia (TGA) is a disorder with reversible anterograde disturbance of explicit memory, frequently preceded by an emotionally or physically stressful event. By using magnetic resonance imaging (MRI) following an episode of TGA, small hippocampal lesions have been observed. Hence it has been postulated that the disorder is caused by the stress-related transient inhibition of memory formation in the hippocampus. In experimental studies, stress has been shown to affect both explicit and implicit learning-the latter defined as learning and memory processes that lack conscious awareness of the information acquired...
2016: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/27900585/divided-attention-reduces-resistance-to-distraction-at-encoding-but-not-retrieval
#3
Jennifer C Weeks, Lynn Hasher
Older adults show implicit memory for previously seen distraction, an effect attributed to poor attentional control. It is unclear whether this effect results from lack of control over encoding during the distraction task, lack of retrieval constraint during the test task, or both. In the present study, we simulated poor distraction control in young adults using divided attention at encoding, at retrieval, at both times, or not at all. The encoding task was a 1-back task on pictures with distracting superimposed letter strings, some of which were words...
November 29, 2016: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/27895607/caffeine-enhances-memory-performance-in-young-adults-during-their-non-optimal-time-of-day
#4
Stephanie M Sherman, Timothy P Buckley, Elsa Baena, Lee Ryan
Many college students struggle to perform well on exams in the early morning. Although students drink caffeinated beverages to feel more awake, it is unclear whether these actually improve performance. After consuming coffee (caffeinated or decaffeinated), college-age adults completed implicit and explicit memory tasks in the early morning and late afternoon (Experiment 1). During the morning, participants ingesting caffeine demonstrated a striking improvement in explicit memory, but not implicit memory. Caffeine did not alter memory performance in the afternoon...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27893345/quo-vadis-the-future-of-psychoanalysis
#5
Mauricio Cortina
Although contemporary psychoanalysis is split into different schools and traditions, there is growing support for some of the main tenets of contemporary psychodynamic thinking from attachment theory, infant research, developmental psychopathology, new models of motivation, the neuroscience of emotions and emotional regulation, and the discovery of different implicit and explicit memory systems. These tenets, which psychodynamic clinicians of all stripes encounter in their daily work with clients, are the following: (1) that large footprints are left over from infancy and childhood which involved insensitive, intrusive, frightening, or shaming care; (2) the carryover of these relational experiences into adulthood are expressed as unconscious expectations and attributions we make of others (transference and countertransference; (3) defensive processes and emotional regulation and deregulatory patterns develop to cope with these unhealthy relations...
December 2016: Psychoanalytic Review
https://www.readbyqxmd.com/read/27872376/the-multi-component-nature-of-statistical-learning
#6
REVIEW
Joanne Arciuli
The central argument presented in this paper is that statistical learning (SL) is an ability comprised of multiple components that operate largely implicitly. Components relating to the stimulus encoding, retention and abstraction required for SL may include, but are not limited to, certain types of attention, processing speed and memory. It is likely that individuals vary in terms of the efficiency of these underlying components, and in patterns of connectivity among these components, and that SL tasks differ from one another in how they draw on certain underlying components more than others...
January 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/27855828/priming-can-affect-naming-colours-using-the-study-test-procedure-revealing-the-role-of-task-conflict
#7
Dinkar Sharma
The Stroop paradigm has been widely used to study attention whilst its use to explore implicit memory have been mixed. Using the non-colour word Stroop task we tested contrasting predictions from the proactive-control/task-conflict model (Kalanthroff, Avnit, Henik, Davelaar & Usher, 2015) that implicate response conflict and task conflict for the priming effects. Using the study-test procedure 60 native English speakers were tested to determine whether priming effects from words that had previously been studied would cause interference when presented in a colour naming task...
November 14, 2016: Acta Psychologica
https://www.readbyqxmd.com/read/27843700/activity-in-primary-motor-cortex-during-action-observation-covaries-with-subsequent-behavioral-changes-in-execution
#8
Nadav Aridan, Roy Mukamel
INTRODUCTION: Observing someone else perform a movement facilitates motor planning, execution, and motor memory formation. Rate, an important feature in the execution of repeated movements, has been shown to vary following movement observation although the underlying neural mechanisms are unclear. In the current study, we examined how the rate of self-paced index finger pressing is implicitly modified following passive observation of a similar action performed at a different rate. METHODS: Fifty subjects performed a finger pressing sequence with their right hand at their own pace before and after passive observation of either a 1-min video depicting the task performed at 3 Hz by someone else or a black screen...
November 2016: Brain and Behavior
https://www.readbyqxmd.com/read/27832611/individual-differences-in-implicit-motor-learning-task-specificity-in-sensorimotor-adaptation-and-sequence-learning
#9
Alit Stark-Inbar, Meher Raza, Jordan A Taylor, Richard B Ivry
In standard taxonomies, motor skills are typically treated as representative of implicit or procedural memory. We examined two emblematic tasks of implicit motor learning, sensorimotor adaptation and sequence learning, asking whether individual differences in learning are correlated between these tasks, as well as how individual differences within each task are related to different performance variables. As a prerequisite, it was essential to establish the reliability of learning measures for each task. Participants were tested twice on a visuomotor adaptation task and on one of two sequence learning tasks, the serial reaction time task or the alternating reaction time task...
November 2, 2016: Journal of Neurophysiology
https://www.readbyqxmd.com/read/27824129/individual-differences-in-explicit-and-implicit-visuomotor-learning-and-working-memory-capacity
#10
Antonios I Christou, R Chris Miall, Fiona McNab, Joseph M Galea
The theoretical basis for the association between high working memory capacity (WMC) and enhanced visuomotor adaptation is unknown. Visuomotor adaptation involves interplay between explicit and implicit systems. We examined whether the positive association between adaptation and WMC is specific to the explicit component of adaptation. Experiment 1 replicated the positive correlation between WMC and adaptation, but revealed this was specific to the explicit component of adaptation, and apparently driven by a sub-group of participants who did not show any explicit adaptation in the correct direction...
November 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27805471/the-role-of-chronic-physical-exercise-and-selective-attention-at-encoding-on-implicit-and-explicit-memory
#11
Concepción Padilla, Julia Mayas, Soledad Ballesteros, Pilar Andrés
Despite the evidence revealing benefits of chronic cardiovascular exercise on executive functions, little research has been conducted on long-term memory. We aimed to investigate the effect of physical exercise on implicit and explicit memory when attention was modulated at encoding in two groups of active and sedentary participants. With this purpose, attention was manipulated in a similar way in the implicit and explicit memory tasks by presenting picture outlines of two familiar objects, one in blue and the other in green, and participants were asked to pay attention only to one of them...
November 2, 2016: Memory
https://www.readbyqxmd.com/read/27797541/slow-wave-and-rem-sleep-deprivation-effects-on-explicit-and-implicit-memory-during-sleep
#12
Sarah J Casey, Luke C Solomons, Joerg Steier, Neeraj Kabra, Anna Burnside, Martino F Pengo, John Moxham, Laura H Goldstein, Michael D Kopelman
OBJECTIVE: It has been debated whether different stages in the human sleep cycle preferentially mediate the consolidation of explicit and implicit memories, or whether all of the stages in succession are necessary for optimal consolidation. Here we investigated whether the selective deprivation of slow wave sleep (SWS) or rapid eye movement (REM) sleep over an entire night would have a specific effect on consolidation in explicit and implicit memory tasks. METHOD: Participants completed a set of explicit and implicit memory tasks at night, prior to sleep...
November 2016: Neuropsychology
https://www.readbyqxmd.com/read/27792781/is-neural-activity-detected-by-erp-based-brain-computer-interfaces-task-specific
#13
Markus A Wenzel, Inês Almeida, Benjamin Blankertz
OBJECTIVE: Brain-computer interfaces (BCIs) that are based on event-related potentials (ERPs) can estimate to which stimulus a user pays particular attention. In typical BCIs, the user silently counts the selected stimulus (which is repeatedly presented among other stimuli) in order to focus the attention. The stimulus of interest is then inferred from the electroencephalogram (EEG). Detecting attention allocation implicitly could be also beneficial for human-computer interaction (HCI), because it would allow software to adapt to the user's interest...
2016: PloS One
https://www.readbyqxmd.com/read/27788456/the-vigilance-avoidance-model-of-avoidant-recognition-an-erp-study-under-threat-priming
#14
Jing Zhai, Xu Chen, Jianling Ma, Qingqing Yang, Ying Liu
Our study examined attachment-related electrophysiological differences in recognition using event-related potentials (ERPs) measured during a study-test paradigm after threat priming. We identified ERP correlates of recognition by comparing the ERPs of attachment-related positive and negative images between avoidant and secure attachment orientations. Our results revealed that the distribution of early old/new effects was broader in avoidant individuals than in secure individuals, and an early parietal old/new effect was observed in avoidant individuals, which reflected their implicit memory...
October 20, 2016: Psychiatry Research
https://www.readbyqxmd.com/read/27753047/regressive-research-the-pitfalls-of-post-hoc-data-selection-in-the-study-of-unconscious-mental-processes
#15
David R Shanks
Many studies of unconscious processing involve comparing a performance measure (e.g., some assessment of perception or memory) with an awareness measure (such as a verbal report or a forced-choice response) taken either concurrently or separately. Unconscious processing is inferred when above-chance performance is combined with null awareness. Often, however, aggregate awareness is better than chance, and data analysis therefore employs a form of extreme group analysis focusing post hoc on participants, trials, or items where awareness is absent or at chance...
October 17, 2016: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/27720868/the-use-of-the-emotional-object-recognition-as-an-assay-to-assess-learning-and-memory-associated-to-an-aversive-stimulus-in-rodents
#16
Anna Brancato, Gianluca Lavanco, Angela Cavallaro, Fulvio Plescia, Carla Cannizzaro
BACKGROUND: Emotionally salient experiences induce the formation of explicit memory traces, besides eliciting automatic or implicit emotional memory in rodents. This study aims at investigating the implementation of a novel task for studying the formation of limbic memory engrams as a result of the acquisition- and retrieval- of fear-conditioning - biased declarative memory traces, measured by animal discrimination of an "emotional-object". Moreover, by using this new method we investigated the potential interactions between stimulation of cannabinoid transmission and integration of emotional information and cognitive functioning...
December 1, 2016: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/27720737/relational-and-procedural-memory-systems-in-the-goldfish-brain-revealed-by-trace-and-delay-eyeblink-like-conditioning
#17
A Gómez, B Rodríguez-Expósito, E Durán, I Martín-Monzón, C Broglio, C Salas, F Rodríguez
The presence of multiple memory systems supported by different neural substrata has been demonstrated in animal and human studies. In mammals, two variants of eyeblink classical conditioning, differing only in the temporal relationships between the conditioned stimulus (CS) and the unconditioned stimulus (US), have been widely used to study the neural substrata of these different memory systems. Delay conditioning, in which both stimuli coincide in time, depends on a non-relational memory system supported by the cerebellum and associated brainstem circuits...
October 6, 2016: Physiology & Behavior
https://www.readbyqxmd.com/read/27702636/intracranial-self-stimulation-also-facilitates-learning-in-a-visual-discrimination-task-in-the-morris-water-maze-in-rats
#18
Soleil García-Brito, Ignacio Morgado-Bernal, Neus Biosca-Simon, Pilar Segura-Torres
Intracranial self-Stimulation (ICSS) of the medial forebrain bundle is a treatment capable of consistently facilitating acquisition of learning and memory in a wide array of experimental paradigms in rats. However, the evidence supporting this effect on implicit memory comes mainly from classical conditioning and avoidance tasks. The present work aims to determine whether ICSS would also improve the performance of rats in another type of implicit task such as cued simultaneous visual discrimination in the Morris Water Maze...
October 1, 2016: Behavioural Brain Research
https://www.readbyqxmd.com/read/27694990/history-dependent-variability-in-population-dynamics-during-evidence-accumulation-in-cortex
#19
Ari S Morcos, Christopher D Harvey
We studied how the posterior parietal cortex combines new information with ongoing activity dynamics as mice accumulate evidence during a virtual navigation task. Using new methods to analyze population activity on single trials, we found that activity transitioned rapidly between different sets of active neurons. Each event in a trial, whether an evidence cue or a behavioral choice, caused seconds-long modifications to the probabilities that govern how one activity pattern transitions to the next, forming a short-term memory...
December 2016: Nature Neuroscience
https://www.readbyqxmd.com/read/27693668/altered-functional-connectivity-during-self-and-close-other-reflection-in-patients-with-bipolar-disorder-with-past-psychosis-and-patients-with-schizophrenia
#20
Liwen Zhang, Lisette Vander Meer, Esther M Opmeer, Jan-Bernard C Marsman, Henricus G Ruhé, André Aleman
Disturbances in implicit self-processing have been reported both in psychotic patients with bipolar disorder (BD) and schizophrenia. It remains unclear whether these two psychotic disorders show disturbed functional connectivity during explicit self-reflection, which is associated with social functioning and illness symptoms. Therefore, we investigated functional connectivity during explicit self-reflection in BD with past psychosis and schizophrenia. Twenty-three BD-patients, 17 schizophrenia-patients and 21 health controls (HC) performed a self-reflection task, including the conditions self-reflection, close other-reflection and semantic control...
September 28, 2016: Neuropsychologia
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